<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Thymeleaf Demo</title>
</head>
<body>
<h1 th:text="${message}">默认文本（当Thymeleaf未渲染时显示）</h1>
</body>
</html>
